[tswast]

Towards internal issue b/579906804

Description

Fixes #

Checklist

Testing

• I have tested this change on a live environment and verified it works as intended.

Compliance & Style

• I have followed the Sample Guidelines.
• The README is updated with all relevant information (if applicable).
• [N/A] If this PR adds a new sample directory: I updated the CODEOWNERS file.

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Post-Approval Actions

• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

You are about to add 5 region tags.

• bigquery/bigframes/query_dry_run.py:15, tag bigquery_bigframes_query_dry_run
• bigquery/pandas-gbq-migration/query_dry_run.py:15, tag bigquery_migration_pandas_gbq_query_dry_run
• bigquery/polars/query_bqstorage.py:15, tag bigquery_polars_query_bqstorage
• bigquery/polars/query_dry_run.py:15, tag bigquery_polars_query_dry_run
• bigquery/polars/query_standard_sql.py:15, tag bigquery_polars_query

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[gemini-code-assist]

Code Review

This pull request introduces new BigQuery samples for BigFrames, pandas-gbq migration, and Polars, including corresponding tests and configuration files. The review feedback highlights several necessary corrections: fixing a SQL syntax error (trailing comma) and mismatched region tags in the Polars samples, adhering to PEP 8 by removing spaces around keyword argument assignment, correcting a return type annotation in the BigFrames dry run sample, simplifying dependency requirements by removing markers for unsupported Python versions (< 3.10), and updating the test configuration to include Python 3.13.

[gemini-code-assist]

The dry run operations in BigQuery DataFrames return metadata objects (or dict-like objects) rather than a pandas.Series. Update the return type annotation to Tuple[dict, dict] to accurately reflect the returned types.

Suggested change

	) -> Tuple[pd.Series, pd.Series]:
	) -> Tuple[dict, dict]:

[tswast]

BigFrames does return a panda Series.

[gemini-code-assist]

Python versions below 3.10 are no longer supported. Please remove the fallback dependency versions and environment markers for Python 3.8 and 3.9, and simplify the requirements accordingly.

pandas==2.2.3; python_version < '3.11'
pandas==3.1.0; python_version >= '3.11'
pandas-gbq==0.35.3
grpcio==1.85.1

References

1. Do not specify fallback dependency versions or environment markers for Python versions older than 3.10, as Python versions below 3.10 are no longer supported.

[gemini-code-assist]

To adhere to the testing policy of only testing the oldest and newest supported Python releases, we should test Python 3.10 (oldest) and Python 3.13 (newest). Please remove Python 3.13 from the ignored versions list so that it is included in the test suite.

Suggested change

	"ignored_versions": ["3.8", "3.9", "3.11", "3.12", "3.13"],
	"ignored_versions": ["3.8", "3.9", "3.11", "3.12"],

References

1. Only test the oldest and newest supported Python releases in test configurations (such as noxfile_config.py), ignoring intermediate versions.